Electronics Forum | Wed Jan 06 18:00:34 EST 1999 | Enza Hill
I'm not sure I'm offering an answer, more a question I have...Isn't there an issue with automated PnP machines whose feeder carriage moves? Have companies such as Fuji, Universal/Sanyo, Panasonic developed the capability to use bulk feeders? I woul
Electronics Forum | Thu Jun 26 14:25:19 EDT 2008 | jax
Current Acceptable HMP Soldering Methods: 1. Wave / Selective Solder: Some Brands require upgrades to heating elements and Pot materials 2. Laser: Works well with PTH and medium/large passive SMT. Damage to PCB masking can occur when try
Electronics Forum | Mon Dec 25 08:43:35 EST 2017 | arjunkolavara
Hi , We are having Pin hole issues on the passive locations in the board after the SMT reflow process. Details: PCB surface Finish : ENIG . Solder paste : Alpha OM338 – M13 / Indium SMQ92J Location : Its Random and more on passive components. {
Electronics Forum | Fri Jul 16 13:33:31 EDT 1999 | Dale
We are converting from COB to SMT on a product line and want to optomize the PCB as far as Laminate, plating, passivation etc. This is a high temp application 150C. We are presently using BT Laminate but would like to get away from this. We are lo
Electronics Forum | Tue Jan 05 13:03:28 EST 1999 | Michael Allen
Another concern is that some bulk feeders present resistors upside-down 50% of the time; I'm told that this can affect heat dissipation and cause other problems (e.g., hidden partmark). Note: this is not a problem with chip capacitors because they'r
Electronics Forum | Tue Sep 18 01:41:23 EDT 2001 | shvetangcd
Hi Jeff, We are having solder-short problems for BGA, QFP, and some other fine pitch parts while using DEK screen printers. The PCB is processed on the second half of the line for screening the side with BGA, QFP, and other fine pitch parts. Which m
Electronics Forum | Tue Dec 23 10:35:55 EST 2003 | Frank Kunc
Hello Grant, I represent an independent distributor (Semixchange Inc.) which is ISO 9000-2001 registered, and has an ESD compliant warehouse. We buy and sell thousands of passive components a year. We stock many part #s in our warehouse in Warwick,RI
Electronics Forum | Thu Jan 13 03:38:18 EST 2005 | Base
Hi Grant, You say your design are increasingly using more passives. Do you mean you're using more and more components per board or is it only the ratio passives/IC's that is shifting? And are you also increasing volume or is it just the component-co
Electronics Forum | Wed Dec 14 13:15:12 EST 2005 | grantp
Hi, Great, and thanks for the info. I will check it out. It's true lead times are long for large reels, but it's worth it when running. We have much faster machines now, but if we are sopped replacing reels all the time, it cuts into up time in a
Electronics Forum | Wed Feb 21 14:10:36 EST 2007 | bobpan
The quad 1000 is best used for 0805 parts and larger. It is termed a chip shooter meaning 'for the most part' passives only. There is no optical alignment and it has mechanical centering using precisor pads. Fiducial finding is done with a beam and n
